#!/bin/sh
#**************************************************************************
#*                                                                        *
#*                                 OCaml                                  *
#*                                                                        *
#*          Damien Doligez, projet Gallium, INRIA Rocquencourt            *
#*                                                                        *
#*   Copyright 2014 Institut National de Recherche en Informatique et     *
#*     en Automatique.                                                    *
#*                                                                        *
#*   All rights reserved.  This file is distributed under the terms of    *
#*   the GNU Lesser General Public License version 2.1, with the          *
#*   special exception on linking described in the file LICENSE.          *
#*                                                                        *
#**************************************************************************

# This script is run on Inria's continuous-integration servers to make sure
# it is possible to bootstrap the compiler.

# To know the slave's architecture, this script looks at the OCAML_ARCH
# environment variable. For a given node NODE, this variable can be defined
# in Jenkins at the following address:
# https://ci.inria.fr/ocaml/computer/NODE/configure

# Other environments variables that are honored:
#   OCAML_CONFIGURE_OPTIONS   additional options for configure
#   OCAML_JOBS                number of jobs to run in parallel (make -j)

# Command-line arguments:
# -conf configure-option  add configure-option to configure cmd line
# -patch1 file-name       apply patch with -p1
# -no-native              do not build "opt" and "opt.opt"
# -jNN                    pass "-jNN" option to make for parallel builds

error () {
  echo "$1" >&2
  exit 3
}

arch_error() {
  configure_url="https://ci.inria.fr/ocaml/computer/${NODE_NAME}/configure"
  msg="Unknown architecture. Make sure the OCAML_ARCH environment"
  msg="$msg variable has been defined."
  msg="$msg\nSee ${configure_url}"
  error "$msg"
}

# Kill a task on Windows
# Errors are ignored
kill_task()
{
  task=$1
  taskkill /f /im ${task} /t || true
}

quote1 () {
  printf "'%s'" "`printf %s "$1" | sed -e "s/'/'\\\\\\\\''/g"`";
}

# Functions used to modify the source code

change_exe_magic_number() {
  old=`./runtime/ocamlrun -M`
  new="$1"
  echo Changing executable magic number from ${old} to ${new}
  # Change magic number in runtime/caml/exec.h
  sed -i 's/\x23define \+EXEC_MAGIC \+\x22'${old}\
'\x22/#define EXEC_MAGIC "'${new}'"/' runtime/caml/exec.h
  # Change magic number in utils/config.mlp
  sed -i 's/let \+exec_magic_number \+= \+\x22'${old}\
'\x22/let exec_magic_number = "'${new}'"/' utils/config.mlp
}

remove_primitive()
{
  echo Removing the \'sinh\' primitive
  patch -p1 < tools/ci/inria/bootstrap/remove-sinh-primitive.patch
}

#########################################################################
# be verbose
set -x

#########################################################################
# Save the current directory (on cygwin, /etc/profile changes it)
jenkinsdir="$(pwd)"
echo jenkinsdir=${jenkinsdir}

#########################################################################
# If we are called from a Windows batch script, we must set up the
# Unix environment variables (e.g. PATH).

case "${OCAML_ARCH}" in
  bsd|macos|linux|solaris) ;;
  cygwin|cygwin64|mingw|mingw64)
    . /etc/profile
    . "$HOME/.profile"
  ;;
  msvc)
    . /etc/profile
    . "$HOME/.profile"
    . "$HOME/.msenv32"
  ;;
  msvc64)
    . /etc/profile
    . "$HOME/.profile"
    . "$HOME/.msenv64"
  ;;
  *) arch_error;;
esac

#########################################################################

# be considerate towards other potential users of the test machine
case "${OCAML_ARCH}" in
  bsd|macos|linux) renice 10 $$ ;;
esac

# be verbose and stop on error
set -ex

#########################################################################
# set up variables

# default values
make=make
instdir="$HOME/ocaml-tmp-install"
confoptions="--enable-ocamltest --enable-dependency-generation \
${OCAML_CONFIGURE_OPTIONS}"
make_native=true
cleanup=false
check_make_alldepend=false
dorebase=false
jobs=''
build=''
host=''

case "${OCAML_ARCH}" in
  bsd|solaris) make=gmake ;;
  macos) ;;
  linux)
    check_make_alldepend=true
  ;;
  cygwin)
    cleanup=true
    check_make_alldepend=true
  ;;
  cygwin64)
    cleanup=true
    check_make_alldepend=true
    dorebase=true
  ;;
  mingw)
    build='--build=i686-pc-cygwin'
    host='--host=i686-w64-mingw32'
    instdir='C:/ocamlmgw'
    cleanup=true
    check_make_alldepend=true
  ;;
  mingw64)
    build='--build=x86_64-pc-cygwin'
    host='--host=x86_64-w64-mingw32'
    instdir='C:/ocamlmgw64'
    cleanup=true
    check_make_alldepend=true
  ;;
  msvc)
    build='--build=i686-pc-cygwin'
    host='--host=i686-pc-windows'
    instdir='C:/ocamlms'
    configure=nt
    cleanup=true
  ;;
  msvc64)
    build='--build=x86_64-pc-cygwin'
    host='--host=x86_64-pc-windows'
    instdir='C:/ocamlms64'
    configure=nt
    cleanup=true
  ;;
  *) arch_error;;
esac

# Make sure two builds won't use the same install directory
instdir="$instdir-$$"

case "${OCAML_JOBS}" in
  [1-9]|[1-9][0-9]) jobs="-j${OCAML_JOBS}" ;;
esac

#########################################################################
# On Windows, cleanup processes that may remain from previous run

if $cleanup; then
  tasks="tee ocamlrun program ocamltest ocamltest.opt"
  for task in ${tasks}; do kill_task ${task}.exe; done
fi

#########################################################################
# Go to the right directory

pwd
cd "$jenkinsdir"

#########################################################################
# parse optional command-line arguments (has to be done after the "cd")

while [ $# -gt 0 ]; do
  case $1 in
    -conf) confoptions="$confoptions `quote1 "$2"`"; shift;;
    -patch1) patch -f -p1 <"$2"; shift;;
    -no-native) make_native=false;;
    -j[1-9]|-j[1-9][0-9]) jobs="$1";;
    *) error "unknown option $1";;
  esac
  shift
done

#########################################################################
# Do the work

# Tell gcc to use only ASCII in its diagnostic outputs.
export LC_ALL=C

$make -s distclean || :

# `make distclean` does not clean the files from previous versions that
# are not produced by the current version, so use `git clean` in addition.
git clean -f -d -x

# Also make a hard reset
git reset --hard HEAD

if $flambda; then
  confoptions="$confoptions -enable-flambda --enable-flambda-invariants"
fi
eval "./configure $build $host --prefix='$instdir' $confoptions"

$make world

change_exe_magic_number "CI-bootstrap"

remove_primitive

$make coreall
$make bootstrap
